List-Making Enviroments

Typically used for giving short definitions or
descriptions; the label argument of the
\item command generally
giving the term being described (although it
can be left blank, it will look strange).
The text of the \item
command is indented.

Produces a list of labeled items and has required
arguments that allow a great deal of flexibility in layout.
It is generally used to define new environments with the
\newenvironment command,
or to set up one-of-a-kind lists.

Like the List Environment, using the currently defined
values of list-making parameters; normally used to define an
environment with a single item, with an
\item command as part of
the environment definition.